Okay I have a 1990 STD hatch with a semi-built D16A6 swap in it. I have it converted to MPFI already, but it has this really bad bog when giving it full throttle too quickly in the lower rpm. If you roll into the throttle the car runs awesome and pulls well enough to run dead even with my wife's old B16A swapped EG hatch, so I know the engine itself is perfect.

The tachometer also goes up too fast and then finally reads accurately as the rpm nears redline, so again I know there's some wiring issues.

Lastly I know my problem resides in the harness or pins because my co-worker's 1990 STD EF did the exact same thing to his B17A swap with this same harness on it, and once he dropped his swap into an Si the bog went away.

Anyways my 90 STD has been totalled and I kept the car, and naturally the swap is going into my newly-purchased 1991 DX, so the question:

WHO MAKES THE BEST POSSIBLE MPFI CONVERSION HARNESS AND DOES NOT NEED A CORE HARNESS?

The stock DPFI harness is going back into my 90 STD so I can sell the car, so the only harness I could possibly turn in is this weird MPFI converted harness.

Also another important Q:

Does anyone make a MPFI AND OBD1 jumper harness rolled into one?

I have a local guy who does wonders with Crome, so I'm thinking seriuously of having mine converted to OBD1 and running a Crome-chipped P06 ECU.

Any help would be great here, because this swap needs to happen ASAP so I can sell this 90 EF as a good beater so I can get enough money to buy the stock sideskirts and new carpet for my 1991 DX.

TIA!



Modified by B18C5-EH2 at 11:00 AM 2/6/2006

 

i think just about everyone is going to need a core unless you get a hasport harness. and getting a obdi and mpfi into one harness you best bet is rywire.com but he needs a core i believe.

 

The guys at rywire are awesome. Contact them...they'll work with you.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18C5-EH2 &raquo;</TD></TR><TR><TD CLASS="quote">
The tachometer also goes up too fast and then finally reads accurately as the rpm nears redline, so again I know there's some wiring issues.
</TD></TR></TABLE>

Interesting...

My car kind of has the same issue. Well, when it's cold out, the tach bounces at high RPMs and doesn't read very accurately. But, after the engine warms up all the way it's fine.

I think it has to do with the wiring or something. I just replaced the ignitor and coil thinking they were the problem, but the tach still bounces.

I'm starting to think it has something to do with the wiring I used to convert the car from DPFI to MPFI and from OBD0 to OBD1. I dunno though.

If you come up with anything, let me know, I'd like to fix the problem.

Oh, about the harness, why don't you just skip buying a new harness and do the wiring yourself?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EJ1 wilcox &raquo;</TD></TR><TR><TD CLASS="quote">Oh, about the harness, why don't you just skip buying a new harness and do the wiring yourself? </TD></TR></TABLE>

Well because I suck at wiring, and honestly I'm too damn lazy to go back through this entire harness to see what could be messed up. At this point i'm not sure if it's in the harness itself or the actual repinning of the ECU plugs, but whatever it is I do not want it transfered to my new car because honestly it's WAY too nice to have any sort of annoyng problems.

Again the engine runs bad-***, and I've learned to drive around it, but it's embarrassing when a friend hops in to see how awesome it pulls only to have them floor it immediately and have their face smashed into the steering wheel from the bog.



I'll PM the Rywire guys then - I already tried calling.

 

call now, we are here

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by droppedcrxsi &raquo;</TD></TR><TR><TD CLASS="quote">call now, we are here </TD></TR></TABLE>

I spoke with Peter - I'm sending you guys my already converted MPFI harness to be gone through to make sure it's not the culprit, then I'm going to follow your repinning instructions so that the same crapola doesn't happen in this car.

Thanks, and I'll be sure to post my experiences on here to let everyone else know what it's like to deal with Rywire.